| 释义 |
con·el·rad
\ˈkänəlˌrad, -ˌraa(ə)d\ noun
(-s)
Etymology: control of electromagnetic radiation
: a system for preventing an enemy from using radio signals from any particular AM station as a guide for aircraft or missiles by shifting all AM stations to either of the frequencies 640 or 1240 and having them broadcast in a group in random order for short intervals on only these frequencies |